<template>
  <div>
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />

   <div v-if="Object.keys(artObj).length!=0">
      <!-- 文章信息区域 -->
      <div class="article-container">
        <!-- 文章标题 -->
        <h1 class="art-title">{{artObj.title}}</h1>

        <!-- 用户信息 -->
        <van-cell center :title="artObj.aut_name" :label="formData(artObj.pubdate)">
          <template #icon>
            <img src="artObj.aut_photo" alt="" class="avatar" />
          </template>
          <template #default>
            <div>
              <van-button type="info" size="mini"
              v-if="artObj.is_followed===true"
              @click="followedFn(true)"
              >已关注</van-button>
              <van-button icon="plus" type="info" size="mini"
              plain
              v-else
                @click="followedFn(false)"
              >关注</van-button
              >
            </div>
          </template>
        </van-cell>

        <!-- 分割线 -->
        <van-divider></van-divider>

        <!-- 文章内容 -->
        <div class="art-content" v-html="artObj.content"></div>

        <!-- 分割线 -->
        <van-divider>End</van-divider>

        <!-- 点赞 -->
        <!-- attitude:  -1: 无态度，0-不喜欢，1-点赞 -->
        <div class="like-box">
          <van-button icon="good-job"
          type="danger"
          size="small"
          v-if="artObj.attitude===1"
          @click="loveFn(true)"
          >已点赞</van-button
          >
          <van-button icon="good-job-o"
          type="danger"
          plain size="small"
          v-else
          @click="loveFn(false)"
          >点赞</van-button
          >
        </div>
      </div>
      <!-- 文章评论区域 -->
      <div>
        <CommentList></CommentList>
      </div>
   </div>
    <!-- 加载区域 -->
    <div v-else><van-loading size="24px" color="#1989fa"  vertical>加载中...</van-loading></div>
  </div>
</template>

<script>
import { detailAPI, userFollowedAPI, userUnFollowedAPI, likeArticleAPI, unLikeArticleAPI } from '@/api'
import { timeAgo } from '@/utils/date'
import CommentList from './CommentList'
export default {
  name: 'ArticleDetail',
  data () {
    return {
      artObj: {}
    }
  },
  async created () {
    const res = await detailAPI({
      artId: this.$route.query.art_id
    })
    this.artObj = res.data.data
    console.log('详情数据', res)
  },
  methods: {
    formData: timeAgo,
    // 实现关注与不关注 ->作者
    async followedFn (bool) {
      if (bool === true) {
        // 用户点在 "已关注" 按钮上
        // 页面   ->  显示关注按钮
        this.artObj.is_followed = false
        // 业务   ->  取关
        // 调接口 ->  取关接口
        const res = await userUnFollowedAPI({
          userId: this.artObj.aut_id
        })
        console.log(res)
      } else {
        // 用户点在 "关注" 按钮上
        // 页面   ->  显示已关注按钮
        this.artObj.is_followed = true
        // 业务和接口 -> 关注接口
        const res = await userFollowedAPI({
          userId: this.artObj.aut_id
        })
        console.log(res)
      }
    },
    // 实现点赞功能->文章
    async loveFn (bool) {
      if (bool) {
        // 点击已点赞
        // 改为点赞
        this.artObj.attitude = 0
        const res = await unLikeArticleAPI({
          artId: this.artObj.art_id
        })
        console.log(res)
      } else {
        // 点击点赞
        this.artObj.attitude = 1
        const res = await likeArticleAPI({
          artId: this.artObj.art_id
        })
        console.log(res)
      }
    }
  },
  components: {
    CommentList
  }
}
</script>

<style scoped lang="less">
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
.van-loading{
  padding-top: 46px;
}
</style>
